paper

gamma+gamma --> pi+pi, K+K : leading term QCD vs handbag model

arXiv:hep-ph/0605072 · doi:10.1016/j.physletb.2006.08.016

Abstract

The "handbag" model was proposed as an alternative, at the present day energies, to the leading term QCD predictions for some hard exclusive processes. The recent precise data from the Belle Collaboration on the large angle cross sections allow a check of these two approaches to be performed. It is shown that the handbag model fails to describe the data from Belle, while the leading term QCD predictions are in reasonable agreement with these data

12 pages, 4 figures, v4: reference added, small improvements in the text

Cited by in corpus (8)